Machine



(No Model.)

H. 1-1. CURTIS.

TYPE WRITING MACHINE.

No. 411,583. Patented Sept. 24, 1889.

@W JW A. M

N. PETERS Phclmljlhcgrapher. Washington. n.c,

UNITE STATES PATENT Orrin-E.

HENRY E. CURTIS, OF SPRINGFIELD, MASSACHUSETTS, ASSIGNOR TO THE YOSTXVRITING MACHINE COMPANY.

TYPE-WRITING MACHIN E.

SPECIFICATION forming part of Letters Patent No. 411,583, datedSeptember 24., 1889.

Application filed June 4, 1888. Serial No. 275,974. (No model.)

To all whom, it may concern:

Be it known that I, HENRY E. OUETIs, aoitizen. of the United States, anda resident of Springfield, in the county of Hampden and State ofMassachusetts, have invented certain new and useful Improvements inType-Writing Machines, of which the following is a specification.

My invention relates more particularly to a mode of assembling thekey-levers of typewriting machines, and has for its main objects toprovide a construct-ion whereby the keylevers may be all rapidly andsecurely placed in position; and to these main ends my inventionconsists in combining with the key-levers a bar, rod, or plate adapted,to be turned to effect the securement of the key-levers in positionagainst casual detachment, all as hereinafter more fully described, andparticularly set forth in the appended claims.

Inthe accompanying drawings, Figure 1 is a vertical section of atype-writing machine involving my invention. Fig. 2 is a detailperspective view, enlarged, of the parts em bodying my improvement. Fig.3 is a vertical section of the same to illustrate the mode ofassembling. Fig. 4. is a vertical transverse section taken on a planerepresented by the line a; of Fig.1, with the key-lever removed. Fig. 5is a perspective view of a modification of my improvement, and Fig. 6 isa similar view of a further modification.

In the several views the same part will be found designated by the sameletter or numeral of reference.

A is the bed-plate or base of the machine; B, the type-ring supported onposts or pillars G; D, the usual hinged paper-carriage; E, a type'barhanger; F, a type-bar pivoted therein 5 G, a connecting-rod, and H afinger-key.

2 designates a key-lever of the second order, to the forward end ofwhich is attached the finger-key. The rear end of said lever issupported in a comb or slotted plate or bar 3, depending from a roundrod 4, running transversely of the machine and j ournaled in the sideframes of the bed-plate or base A. Between the finger-key and thelever-support is pivoted the lower end of a link 5, Whose upper end isattached to a key-lever 6 of the third order. The forward end of thelastmentioned lever is fulcrumed upon a similar rod a, and its rearwardend is attached to the lower end of the connecting-rod G.

In all of the figures of drawings, excepting those marked 5 and 6, theslotted plate or comb 3 is secured to or made integral with thetransverse fulcrum-rod 4:, and in all of said figures said rod isjournaled to the machine-frame, so as to be capable of a turningmovement.

In assembling the key-levers of the machine the plate or comb 3 and therod 4 are turned to the position shown in full lines at Fig. 3, and thefulcrum ends of the levers inserted in the slots or openings 7 in saidplate or comb.

When all the levers shall have been thus put.

in position, the plate is turned in the direction of the arrow at Fig. 3and brought into the vertical position shown by the dotted lines,thereby effectually looking or securing the lever ends againstan-yendwise movement suflicient to withdraw them from their places. Bythis simple device the assembling of the key-levers may bespeedilyaecomplished and without liability of any of the levers gettingout of position during transportation or use of the machine. Preferablythe journals of the bar a consist of screws 8, whose points pass throughthe framing, as at Fig. 4, and into threaded holes 9 in the ends of thebar, which may be turned by a pin introduced into a capstan-hole 10therein. By inserting the key-lever ends into the slots or openings '7the levers are kept laterally in place and at the proper distancesapart.Should it be desired at any time to remove any lever, the same may beeffected by simply turning the comb back to first position andwithdrawing endwise such lever. I

In the modification shown at Fig. 5 the locking comb or plate 3 and thefulcrum-rod 4 are made separate, the comb onlybeing designed to turn,for which purpose it is provided with journal-bearings, as seen at 11.

In the modification shown at Fig. 6 the locking-plate and thesupporting-bar at are made of a single flat piece of stock, which isprovided at its ends with journals 12.

In the various forms in which my invention is exhibited it will be seenthat the perforated, slotted, or comb-like locking-plate is adapted v tobe turned into two positionsone to permit the insertion and removal ofthe fulcrum ends of the key-levers and the other to effect the retentionin position of said levers against accidental detachment longitudinally.I prefer to bend the fulcrum ends of the levers to conform to thecurvature of the fulcrum-rod 4 when made cylindrical, as shown in Figs.1 4. The construction illustrated in these figures of the drawings isthe one I am now using successfully in practice and is the one to whichI give my preference.

Of course numerous changes in detail construction may be made withoutdeparting from the principle of my invention, and inasmuch as otherkinds of key-levers than those shown may be equally well employed inconnection with the locking-plate, I do not Wish my invention consideredas limited to the use of any particular class or construction of lever.

The arrangement of lovers of the. second and third orders herein shownand described form the subject-matter of another application, Serial No.275,973, filed simultaneously by me, and hence no claim thereto is madein this case.

What I claim as new, and desire to secure by Letters Patent, is

1. In a type-writing machine, the combination, with the key-levers, of aplate adapted to ing transportation or use of the machine, substantiallyas set forth.

2. In a type-writing machine, the combination, with the key-levers, of aplate provided with openings for the reception of the ends of thekey-levers and adapted to be turned into a position to effect thelocking or securement of said levers against endwise displacement.

3. In a type-writing machine, the combination, with the key-levers, of atransverse fulcrum rod or support and a slotted or perforated vibratorylocking-plate, substantially as set forth.

4. In a type-writing machine, the combination, with the key-levers, of atransverse fulcrum rod or support adapted to turn and a slotted orperforated vibratory locking-plate, substantially as set forth.

Signed at Springfield, in the county of Ham pden and State ofMassachusetts, this 14th day of December, A. D. 1887.

HENRY E. CURTIS.

WVitnesses:

WM. K. BAKER, C. M. SHEDD.

